Undefined variable errors during installation

[rivers]

I attempted to install GetSimple 2.01 on a virtual server with this configuration:
Apache 2.2.3
PHP 5.3.2 running in FastCGI mode
mod_write enabled
temp.htaccess was renamed to .htaccess and chmoded to 777. Setting RewriteBase manually or leaving the defuault did not help.

The site is located located at:
/usr/www/capoeira/dev/public_html and aliased to /home/capoeira/dev/public_html

I turned on error reporting in the gsconfig.php file, the error messages I received are listed below (note that the directory is not correct even though I set it correctly in .htaccess):
__________________________________
Notice: Undefined variable: SITEURL in /usr/www/capoeira/public_html/admin/inc/common.php on line 87

Notice: Undefined variable: SITENAME in /usr/www/capoeira/public_html/admin/inc/common.php on line 90

Notice: Undefined variable: LANG in /usr/www/capoeira/public_html/admin/inc/common.php on line 108

Warning: Cannot modify header information - headers already sent by (output started at /usr/www/capoeira/public_html/admin/inc/common.php:87) in /usr/www/capoeira/public_html/admin/inc/common.php on line 129

Thanks,
Adam